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[kruh-stey-shuh n] /krʌˈsteɪ ʃən/

any chiefly aquatic arthropod of the class Crustacea, typically having the body covered with a hard shell or crust, including the lobsters, shrimps, crabs, barnacles, and wood lice.
belonging or pertaining to the crustaceans.
any arthropod of the mainly aquatic class Crustacea, typically having a carapace hardened with lime and including the lobsters, crabs, shrimps, woodlice, barnacles, copepods, and water fleas
of, relating to, or belonging to the Crustacea

1835, from Crustacea the class name. As an adjective, 1858 (earlier was crustaceous, 1640s).
Any of various widespread arthropods of the class Crustacea that live mostly in water and have a hard shell, a segmented body, and jointed appendages. Crustaceans include crabs, lobsters, shrimp, barnacles, and copepods.
crustacean [(kru-stay-shuhn)]

A class of arthropods with shells.

Note: Crabs, lobsters, shrimp, and crayfish are crustaceans.


Read Also:

  • Crustaceous

    [kruh-stey-shuh s] /krʌˈsteɪ ʃəs/ adjective 1. of the nature of or pertaining to a crust or shell. 2. . 3. having a hard covering or crust. /krʌˈsteɪʃəs/ adjective 1. forming, resembling, or possessing a surrounding crust or shell 2. (zoology) another word for crustacean (sense 2)

  • Crustal-plate

    noun, Geology. 1. a large block or tabular section of the lithosphere that reacts to tectonic forces as a unit and moves as such.

  • Crustal

    [kruhs-tl] /ˈkrʌs tl/ adjective 1. of or relating to a crust, as of the earth. /ˈkrʌstəl/ adjective 1. of or relating to the earth’s crust

  • Crustation

    n. mid-17c., noun of action from crust (v.).

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